{"product_id":"double-arches-single-span-greenhouse","title":"Double Arches Single Span Greenhouse","description":"\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta http-equiv=\"Content-Type\" content=\"text\/html; charset=utf-8\"\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cspan\u003eA cold-climate single-span greenhouse featuring a double-arch frame — an outer load-bearing arch and an inner arch separated by a 40–60cm air gap — covered with two layers of agricultural film. The trapped air layer between the films acts as a thermal barrier, cutting winter heat loss by 30–50% compared to a single-film arch tunnel and reducing heating costs substantially. Designed for high-latitude and severe-winter regions where year-round production depends on reliable insulation, without the capital cost of a multi-span glass or polycarbonate greenhouse.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e  \u003c!-- split --\u003e\n\u003cdiv\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cstrong\u003eKey Highlights\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e· Double-arch frame (outer load-bearing arch + inner arch) with 40–60cm trapped air gap — effective thermal insulation barrier\u003cbr\u003e · Double-layer film covering reduces winter heat loss by 30–50% and cuts heating costs substantially vs. single-film tunnels\u003cbr\u003e · Hot-dip galvanized steel frame, 275g\/m² zinc coating, 15+ year service life\u003cbr\u003e · Single-span flexibility with cold-climate insulation — ideal for high-latitude and severe-winter regions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cstrong\u003eProduct Overview — Double-Layer Insulation for Cold Climates\u003c\/strong\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cspan\u003eThe PONSUNO Double Arches Single Span Greenhouse is purpose-built for one challenge: maintaining a stable growing environment through severe winters without excessive heating expenditure. Its defining feature is a double-arch frame — an outer arch that carries the full structural load (wind, snow, film weight) and an inner arch positioned 40–60cm below it. Each arch is covered with its own layer of film, trapping a stationary air layer between the two films. Because air is a poor conductor of heat, this trapped layer functions as an effective insulation barrier, reducing the greenhouse's overall heat transfer coefficient (U-value) to roughly 3.0–4.0 W\/m²K — compared to 6.0–7.0 W\/m²K for a standard single-film arch tunnel.\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"2\" data-line=\"true\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructure \u0026amp; Materials. \u003c\/b\u003e\u003c\/span\u003eThe load-bearing frame uses hot-dip galvanized steel with a 275g\/m² zinc coating. The outer arch is formed from 25–50mm diameter steel pipe, sized by span and local snow\/wind loads. The inner arch uses slightly smaller pipe (20–40mm), as it carries only the inner film weight and does not bear external loads. The two arches are connected by short spacer bars (typically 40–60cm long) that maintain the air gap and transfer some load between layers. Side walls are vertical or slightly curved, with the inner film terminating at the side-wall base to seal the air cavity. All connections are bolted with galvanized hardware; no field welding required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eThermal Performance\u003c\/b\u003e\u003c\/span\u003e— The Defining Advantage. The double-film air-gap system delivers insulation performance that a single-film greenhouse cannot match. In winter, the outer film is exposed to ambient cold while the inner film stays close to indoor temperature; the stationary air layer between them resists conductive heat flow. Field measurements in cold-climate operations show that double-arch double-film greenhouses maintain indoor temperatures 5–8°C higher than single-film tunnels under identical outdoor conditions and heating input, or achieve the same target temperature with 30–50% less fuel consumption. For growers in regions with prolonged freezing winters, this directly translates to lower operating costs and fewer crop losses during cold snaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructural Performance. \u003c\/b\u003e\u003c\/span\u003eThe outer arch carries all external loads (wind, snow, rain) and is engineered to the same standards as a single-arch tunnel. The inner arch is a lighter, non-load-bearing member that primarily supports the inner film. The spacer bars between arches provide lateral stability and help prevent the inner film from sagging. Snow load resistance ranges from 0.25–0.40 kN\/m² depending on steel specification — comparable to or slightly better than a single-arch tunnel of the same outer-arch gauge, since the double-layer system adds some rigidity. Wind resistance is up to 130 km\/h with reinforced options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eTrade-Offs. \u003c\/b\u003e\u003c\/span\u003eThree considerations. First, the double-arch frame and double-film covering increase material cost by approximately 25–40% over a comparable single-arch tunnel. Second, the inner film and air gap reduce light transmission by roughly 10–15% compared to a single-film greenhouse — a trade-off that is acceptable in cold climates (where heating, not light, is the limiting factor) but may matter for high-light crops in marginal regions. Third, condensation between the two films must be managed; the air gap should be ventilated or the inner film treated with anti-drip coating to prevent droplet buildup that further reduces light and adds weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eCovering \u0026amp; Integrated Systems. \u003c\/b\u003e\u003c\/span\u003eThe outer film is standard 150–200 micron PE\/PO\/EVA (anti-fog, anti-drip, UV-stabilized). The inner film is typically 100–150 micron PE\/PO with anti-drip treatment. Side walls are selectable: double film (for maximum insulation), single film, polycarbonate hollow sheet, or color steel sandwich panel. The structure supports side roll-up ventilation, internal\/external shading (30%–85%), heating (hot-water boiler, unit heater, or radiant floor — the primary system in cold climates), drip or spray fertigation, environmental control, and supplemental lighting (often essential in short-day winter months at high latitudes).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"10\" data-line='\\\"true\\\"'\u003e\n\u003cspan\u003e\u003cb\u003eWho It's For. \u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003eGrowers in high-latitude or severe-winter regions (Northern Europe, Russia, Canada, northern China, mountainous areas); operations producing warm-season crops through winter where heating cost is the dominant expense; budget-conscious growers who want multi-span-level insulation at single-span capital cost; and any project where winter heat retention is the primary design driver.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- specs --\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border-spacing: 0;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 32%;\"\u003e \u003ccol style=\"width: 68%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eStructure Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eDouble-arch double-film single-span greenhouse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eRoof Profile\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eDouble-layer arched roof — outer arch + inner arch, 40–60cm air gap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eSpan Width\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e6m \/ 8m \/ 10m \/ 12m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e20m – 100m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eOuter Ridge Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e3.5m – 5.5m (varies by span)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eInner Ridge Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e3.0m – 5.0m (40–60cm below outer ridge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eEave \/ Side-Wall Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e2.5m – 4.0m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eAir Gap Between Arches\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e40 – 60cm (stationary insulation layer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eMain Frame Material\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eHot-dip galvanized steel, 275g\/m² zinc coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eOuter Arch Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e25mm \/ 32mm \/ 40mm \/ 50mm \/ 60mm (load-bearing, per span \u0026amp; load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eInner Arch Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e20mm \/ 25mm \/ 32mm \/ 40mm (supports inner film only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eSpacer Bars\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e40–60cm galvanized steel, connecting outer and inner arches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eOuter Film\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e150–200 micron PE \/ PO \/ EVA (anti-fog, anti-drip, UV-stabilized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eInner Film\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e100–150 micron PE \/ PO (anti-drip treated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eSide-Wall Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eDouble film \/ Single film \/ Polycarbonate hollow sheet \/ Color steel sandwich panel — selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eOverall U-Value (Insulation)\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e3.0 – 4.0 W\/m²K (vs. 6.0–7.0 for single-film tunnel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eLight Transmission\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e75% – 82% (double film, new condition; ~10–15% less than single film)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eNatural Ventilation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eSide roll-up vents (both sides) + optional roof vents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eMechanical Cooling\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eOptional fan \u0026amp; pad evaporative cooling system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eShading System\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eOptional internal \/ external motorized shade net (30% – 85%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eHeating System\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eOptional hot-water boiler \/ unit heater \/ radiant floor (primary system in cold climates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eIrrigation \u0026amp; Fertigation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eOptional drip \/ spray \/ ebb-and-flow with automated dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eEnvironmental Control\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eOptional multi-zone sensor + central controller + remote app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eSupplemental Lighting\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eOptional LED \/ HPS grow light system (recommended for high-latitude winters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eSnow Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e0.25 – 0.40 kN\/m² (per steel specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eWind Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eUp to 130 km\/h (reinforced options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eDoor\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eDouble sliding door or hinged door (1.5m × 2.5m standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eFoundation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003eConcrete strip foundation or independent column foundation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eFrame Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e15 – 20 years (with proper maintenance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eOuter Film Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e3 – 5 years (depending on film grade and climate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; vertical-align: middle;\"\u003eInner Film Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; vertical-align: middle;\"\u003e4 – 6 years (protected from UV by outer film)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"我的商店","offers":[{"title":"Default Title","offer_id":67715411738837,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/1030\/6773\/files\/DoubleArchesSingleSpanGreenhouse-2.png?v=1792246526","url":"https:\/\/ponsuno.com\/products\/double-arches-single-span-greenhouse","provider":"PONSUNO","version":"1.0","type":"link"}